Looks like a great solution. Of course, the results will only be known after the end of the winter season. I'm fed up with stakes knocking over cars and plows and then tearing them apart. I had too many splinters.
Pros
Right the first time. FLEX GUARD mounts are by far the fastest and best way to mount traffic signs. Patented FLEX GUARD protection for extreme durability in sub-zero and extreme conditions of -120 F. Tested by Snow Plow Contractors in northern Minnesota! ~Also available in packs of 16 and 24